Described is a composite polymeric system to provide enhanced stimuli-responsiveness. The first aspect provides particles where the particles are made of stimuli-responsive polymer which responds to various stimuli such as temperature and pH change. Incorporated with this particle is a second polymer which in turn is relatively insensitive to stimuli. The invention can be potentially applied to other systems comprising a swellable hydrogel and a nonswellable hydrophobic polymer.

 
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